most broken viper ult for split

I have noticed a huge difference in performance since the last patch, previously the game would stutter when a bunch of util was used or even in 1v1 gunfights. People would jump around in front of my crosshair almost like they were teleport...

I was watching a Teaching Valo stream and in the POV of the one being coached, they had this dot on top of everyone's heads and I wanted to have that too since I'm also learning but I cant find it in the settings, where is it??